National Weather Service United States Department of Commerce

Heavy rain and mountain snow across the northwestern U.S. this weekend

A Pacific storm system will continue to impact the West Coast through Sunday. Heavy rainfall could lead to flash flooding, river and small stream flooding, as well as mudslides and debris flows, especially over burn scars. At higher elevations, strong winds and heavy snowfall, with accumulations of 1 to 3 feet, could result in hazardous travel through mountain passes.
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Hazardous Weather Conditions

Last Update: 420 AM EST SUN DEC 21 2014

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Coastal waters from Bonita Beach to Englewood FL out 20 NM

Marine Zone Forecast

IMPORTANT NOTICE TO MARINERS...MARINE FORECASTS ARE ISSUED AT LEAST FOUR TIMES A DAY. BOATERS ON EXTENDED TRIPS SHOULD ROUTINELY MONITOR SUBSEQUENT FORECAST ISSUANCES AND UPDATES FOR THE LATEST MARINE WEATHER INFORMATION. THE WAVE HEIGHTS ARE FORECAST AS SIGNIFICANT WAVE HEIGHT WHICH IS THE AVERAGE OF THE HIGHEST ONE-THIRD OF THE WAVES. THE HIGHEST WAVES MAY RARELY BE TWICE THE SIGNIFICANT WAVE HEIGHT. THE WINDS AND SEAS NEAR THUNDERSTORMS MAY BE HIGHER THAN FORECAST.


  • SynopsisA STATIONARY FRONTAL BOUNDARY IS LOCATED ACROSS THE NORTHERN WATERS...JUST TO THE SOUTH OF CEDAR KEY EARLY THIS MORNING. WINDS ARE EAST TO SOUTHEAST SOUTH OF THIS BOUNDARY AND FROM THE NORTHEAST ON ITS NORTHERN SIDE. AREAS OF SHOWERS/RAIN EXPECTED TO INCREASE IN COVERAGE OF THE MARINE AREA TO THE NORTH AND WEST OF TAMPA BAY TODAY...SHOWERS REACHING FURTHER SOUTH TONIGHT. THE WARM FRONT IS EXPECTED TO LIFT NORTH OF THE FORECAST WATERS FOR MONDAY WITH SOUTHERLY FLOW HOLDING IN PLACE UNTIL A COLD FRONT CROSSES THE REGION SOMETIME ON WEDNESDAY.
  • Today Southeast winds around 10 knots increasing to 10 to 15 knots. Seas 1 to 2 feet building to around 2 feet. Bay and inland waters a light to moderate chop. Isolated showers in the afternoon.
  • Tonight Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Bay and inland waters a light to moderate chop. Scattered showers.
  • Monday South winds 10 to 15 knots. Seas 2 to 4 feet. Bay and inland waters a light to moderate chop. Isolated showers.
  • Monday Night Southeast winds around 10 knots. Seas 2 to 3 feet. Bay and inland waters a light chop. A slight chance of thunderstorms after midnight.
  • Tuesday Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Bay and inland waters a moderate chop. Areas of fog. A slight chance of thunderstorms.
  • Tuesday Night South winds 15 to 20 knots. Seas 3 to 5 feet. Bay and inland waters choppy. A chance of showers and a slight chance of thunderstorms. Areas of fog.
  • Wednesday South winds 15 to 20 knots then becoming west in the afternoon. Seas 3 to 5 feet. Bay and inland waters choppy. Thunderstorms likely in the morning...then showers likely and a slight chance of thunderstorms in the afternoon.
  • Wednesday Night Northwest winds around 20 knots. Seas 4 to 6 feet. Bay and inland waters choppy. A slight chance of showers in the evening.
  • Thursday North winds 10 to 15 knots. Seas 5 to 7 feet subsiding to 3 to 5 feet. Bay and inland waters a moderate chop.



Additional Forecasts and Information

Zone Area Forecast for Coastal waters from Bonita Beach to Englewood FL out 20 NM
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